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This helped from https://www.drupal.org/project/drupal/issues/3258987#comment-14384134: π Status report should warn about OPcache bug in PHP 8.1.0 to 8.1.5 Fixed
systemctl restart php8.1-fpm.service drush cr
Hello. I've upgraded my site to Drupal 9.3.6. It works fine on PHP 7.3.
But then I tested it with PHP 8.1.3. This error occurred and stop the site from render:
Error: Class "Drupal\Core\Logger\RfcLogLevel" not found in /var/www/web/core/includes/errors.inc on line 26 #0 /var/www/web/core/includes/errors.inc(60)
#1 /var/www/web/core/includes/bootstrap.inc(346): _drupal_error_handler_real()
#2 /var/www/vendor/composer/ClassLoader.php(571): _drupal_error_handler()
#3 /var/www/vendor/composer/ClassLoader.php(571): include('...')
#4 /var/www/vendor/composer/ClassLoader.php(428): Composer\Autoload\includeFile()
#5 /var/www/web/core/lib/Drupal/Core/Logger/LoggerChannelFactory.php(34): Composer\Autoload\ClassLoader->loadClass()
#6 [internal function]: Drupal\Core\Logger\LoggerChannelFactory->get()
#7 /var/www/web/core/lib/Drupal/Component/DependencyInjection/Container.php(258): call_user_func_array()
#8 /var/www/web/core/lib/Drupal/Component/DependencyInjection/Container.php(176): Drupal\Component\DependencyInjection\Container->createService()
#9 /var/www/web/core/lib/Drupal/Component/DependencyInjection/Container.php(437): Drupal\Component\DependencyInjection\Container->get()
#10 /var/www/web/core/lib/Drupal/Component/DependencyInjection/Container.php(240): Drupal\Component\DependencyInjection\Container->resolveServicesAndParameters()
#11 /var/www/web/core/lib/Drupal/Component/DependencyInjection/Container.php(176): Drupal\Component\DependencyInjection\Container->createService()
#12 /var/www/web/core/lib/Drupal/Component/EventDispatcher/ContainerAwareEventDispatcher.php(136): Drupal\Component\DependencyInjection\Container->get()
#13 /var/www/vendor/symfony/http-kernel/HttpKernel.php(191): Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch()
#14 /var/www/vendor/symfony/http-kernel/HttpKernel.php(179): Symfony\Component\HttpKernel\HttpKernel->filterResponse()
#15 /var/www/vendor/symfony/http-kernel/HttpKernel.php(80): Symfony\Component\HttpKernel\HttpKernel->handleRaw()
#16 /var/www/web/core/lib/Drupal/Core/StackMiddleware/Session.php(58): Symfony\Component\HttpKernel\HttpKernel->handle()
#17 /var/www/web/core/lib/Drupal/Core/StackMiddleware/KernelPreHandle.php(48): Drupal\Core\StackMiddleware\Session->handle()
#18 /var/www/web/core/modules/page_cache/src/StackMiddleware/PageCache.php(191): Drupal\Core\StackMiddleware\KernelPreHandle->handle()
#19 /var/www/web/core/modules/page_cache/src/StackMiddleware/PageCache.php(128): Drupal\page_cache\StackMiddleware\PageCache->fetch()
#20 /var/www/web/core/modules/page_cache/src/StackMiddleware/PageCache.php(82): Drupal\page_cache\StackMiddleware\PageCache->lookup()
#21 /var/www/vendor/asm89/stack-cors/src/Asm89/Stack/Cors.php(49): Drupal\page_cache\StackMiddleware\PageCache->handle()
#22 /var/www/web/core/lib/Drupal/Core/StackMiddleware/ReverseProxyMiddleware.php(48): Asm89\Stack\Cors->handle()
#23 /var/www/web/core/lib/Drupal/Core/StackMiddleware/NegotiationMiddleware.php(51): Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle()
#24 /var/www/vendor/stack/builder/src/Stack/StackedHttpKernel.php(23): Drupal\Core\StackMiddleware\NegotiationMiddleware->handle()
#25 /var/www/web/core/lib/Drupal/Core/DrupalKernel.php(708): Stack\StackedHttpKernel->handle()
#26 /var/www/web/index.php(19): Drupal\Core\DrupalKernel->handle()
#27 {main}
If I switch it back to PHP 7.3, everything works fine.
Since it seem to be an autoloader issue, I tried "composer dump-autoload" and "drush cr" a few times. I've also tried to upgrade everything with "composer update". They didn't work.
The software versions:
I'm not sure how to reproduce it.
Closed: duplicate
9.3
Last updated
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It's likely this issue predates Contrib.social: some issue and comment data are missing.
This helped from https://www.drupal.org/project/drupal/issues/3258987#comment-14384134: π Status report should warn about OPcache bug in PHP 8.1.0 to 8.1.5 Fixed
systemctl restart php8.1-fpm.service
drush cr